Photographic camera



April 14, 193%3 H, KUPPENBENDER 2,037,513

PHOTOGRPHIC CAMERA Filed June 29, 1954 a Wiliam@ atente Apr., ist, 1936Umso HGTOGRAPEEC Applicaties tune ce, isst, sessi sie. v

lio. Germany September? 2i, i933 il' Claim l With photographic camerasin which the sharp adjustment of the objective with respect to theobject to be photographed is eeeted "oy looking at the latter through adistance metes coupled with the means for moving the objective, it isnecessary to employ a distance met-er which is so designed that ii thecamera should, perhaps he slightly damages, or in the case offluctuations ci the temperatuse possibly no faults in meas= using thedistance or ih adjusting objective im shatp photogifachinK7 are thesehycaused.

With the minor basis distance meters hitheito uses?. :tot the purposestated, in which meters the pencil of rays, or the measuring sayrespectively, is cleiecteti ley the tossing oi a micros, this tossingmust ice extremely accurate, as the de= lection is, as is lriotvn, equalto double the angle oi turning oi the mirror. The means supporting theaisle carrying the mirror, as well as the meats tot transmitting themotion from said axle to the objective adjusting means, must, therefore,loe oi' excellent workmanship and they ase et;n traordinarily sensitiveas regards eveo minute variations ci their proces position, as otherwisethe sharp adjustment and the measurement tvill.

no more loe exact.

New, in oider to obviate entirely the 'use ci turo-= able minors, l'.have modified the construction ih such a manner that the measuring ses;is de= ecjted by changing the posities. ci optical Wedge. This wedge mayhe formed cyl-incisi cal lenses or by spherical ones. im ioht oi thereflecting surface oi the distance metes, "upon which surface thegoencil of rays i'icst impiiiees i place a system ci lenses of such alfziiiti. that ati optical zero effect can ce attained. "fcat sys fi ciieiises can loe composed, for instance, ot a tive and a negativecylindrical lens, which two lenses have equal radii of cuvature. isiecs= sihle to place these lenses irl such a matinee telam tively to oneanother that they constitute a plano-parallel plate and are, therefore,optically ineffective. it che of said lenses is turned. about its'cylinder axis, the tvfo lenses together icm an optical wedge by whichthe pencil ci rave, or the measuring ray respectively, is deflected.choosing suitably the :radii oi curvature of? the two lenses, it isrendered possible to produce quite insigncant angle deflections "cv alarge shitting o the lenses with respect to one aneth-e This is veryadvantageous insofar as a thus de= signed distance metes mechanism cao.he huilt with a comparatively large allowance vvliererom results aconsiderable reduction oi the mamita@ turing costs in proportion to themaauactusihg 'Fettes of ti m of the tlistarlce meteo? can The inventionis illustrated elevato and. by way off etz-ampie on the acc@ drawing onwhich rieure .l is a fico i photographic camera clesignecl aocoinvention, and imi-gute 2 is partly a 'sie pai'tly horizontalsectionthrough, e

i is a roll film camel-a equicpeo changeable exposing objective whiclicai-l. lo ially shifted by means of a Wcim-thtea, sharp adjustment. Themovement o the ohgec tive is 'transmitted to a distance meter 'tesmed oilenses and il arid a hombic glass 'prism e which. constitutes the basisci the distance me E 25 alici l denote the reflexion surfaces. To thesemi-a tra'ospareiit siii/ered or gilt surface i is cemented a prism 23@ermittlung direct oir-servo* c o1? the object he photographed. 'liteiene examisie shown, stationary, aereas the ichs n is tw? aislerelatively to the lexis wish, it, however, to zoe understood. that alsothe 'leus may tum'alole, o? both lenses may he adjustable with respectto che another. The lens i is attached, to an arm that ls tuihahle on a'piv-z ot '"rahsmittirlg the motion tem the objective 'to the movableieos i is effected tlv means of cogutvheels iii, ii and i2; this lastwheel meshes with a racl i3 connected by a soci iii with the 4@ io thathears the lens l. This arm has a -iu'veri sict i i'esemloling aneiorigateti ariel the adjacent enti oi the tod ill i'oisis a finger thatengages said slot, as shown ih 2. 'The slot i6 is a correction slot, theshape of which is such 45 that measuring faults clue to the transmissionmembers ae rendered ineective. Adjusting the exposing objective 2 iseected hv means oi the adjusting Wheel ii.

t ela-1m: 50 i. in a photographic camera, in combination with anobjective, means for adjusting the same, a distance meter, means forcoupling the latter with said adjusting means, and a positive and anegative optical lens with similia7 mail of eurve.- 55

ture adapted to produce a zero optical effect said lenses forming anoptical .wedge` adapted to deect the measuring ray. l

2. In a photographic camera, in combination with an objective, means foradjusting the same, a distance meter, means for coupling the same withsaid adjusting means, a positive and a negative optical lens withsimilar radii of curvature adapted to produce a mrc optical eifect saidlenses forming an optical wedge of variable strength adapted to deectthe measuring ray.

3. In a photographic camera, in combination with an objective, means foradjusting the same, a distance meter, means for coupling this latterwith said adjusting means, a positive lens and a negative lens withsimilar radii oi' curvature adapted to be moved about an axis standingvertical to the measuring plane and adapted to form an optical wedgeadapted to deflect the measuring ray.

4. In a photographic camera, in combination with an objective, means foradjusting the same, a distance meter, means for coupling said distancemeter with said adjusting means, two cylindrical lenses possessingsimilar radii of curvature forming an optical wedge adapted to deilectthe measuring ray.'

5. In a photographic camera, in combination with an objective, means foradjusting the same, a distance meter, means for coupling it with ,said

adjusting means, two cylindrical lenses possess-- ing similar radii of`curvature so that their optical eil'ect is zero and arranged so thattheir axis is vertical to the measuring plane of said distance meterforming an optical wedge adapted to deflect,

the measuring rays.

distance meter, means for coupling it with said v adjusting means, astationary lens and a movable lens normally located the one relative tothe other so that the optical eilect is zero, said two lenses forming anoptical wedge adapted to deect the measuring ray, and means for movingsaid movable lens around the common centre of curvature of the twolenses when the rays of light are deected.

' 8. In a photographic camera, in combination, an objective, means foradjusting the same, a distance meter, means coupling the distance meterwith said adjusting means. a stationary lens and a movable lens, saidlenses having a common centre of curvature and forming an optical wedgeadapted to deflect the measuring ray, means for moving said movable lensaround the common centre axis of 'the lenses `when the rays oi' lightare deilected.

9. In a photographic camera, in combination, an objective, means foradjusting it, a distance meter, means coupling it with said adjustingmeans, two optical lenses normally so arranged relatively to one anotherthat the optical edect is zero said lenses having a common centre ofcurvature and forming an optical wedge adapted to deilect the measuringray, means for moving said lenses around their common centre oi'curvature when the distance is being measured, and a rhombic prismconstituting the basis of said distance meter, said prism and saidlenses being in optical'reiation with respect to one another.

10. In a hotographic camera, in combination, an objecti e,'a distancemeter, means for adjusting said objective 'and means for coupling saidmeter and said adjusting-means with one another, a stationary sphericallens and a movable spherical lens normally so arranged with-respect toone another that the optical effect is zerorsaid lenses forming anoptical wedge adapted to de iiect the measuring ray, the movement ofsaid movable lens adapted to be used for adjusting the faults oi' thedistance meter in height and later# l1. In a photographic camera, incombination.

an objective, means for adjusting said objective,

